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Related Concept Videos

Motor and Sensory Areas of the Cortex01:14

Motor and Sensory Areas of the Cortex

The cerebral cortex, the brain's outermost layer, is pivotal in processing complex cognitive tasks, emotions, and various sensory inputs and executing voluntary motor activities. This intricate structure is divided into three primary functional areas: the motor areas, sensory areas, and association areas.
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Association Areas of the Cortex01:21

Association Areas of the Cortex

Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Vision01:24

Vision

Vision is the result of light being detected and transduced into neural signals by the retina of the eye. This information is then further analyzed and interpreted by the brain. First, light enters the front of the eye and is focused by the cornea and lens onto the retina—a thin sheet of neural tissue lining the back of the eye. Because of refraction through the convex lens of the eye, images are projected onto the retina upside-down and reversed.
Somatosensory, Motor, and Association Cortex01:23

Somatosensory, Motor, and Association Cortex

The somatosensory cortex in the parietal lobes is crucial for interpreting sensory data such as touch, temperature, and proprioception. The somatosensory cortex, situated in the parietal lobes, plays a vital role in interpreting sensory information like touch, temperature, and proprioception—awareness of body position. This specialized brain region features an organized structure wherein neurons at the top primarily process sensations originating from the lower body. In contrast, those at the...
Parallel Processing01:20

Parallel Processing

The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
Depth Perception and Spatial Vision01:15

Depth Perception and Spatial Vision

Depth perception is the ability to perceive objects three-dimensionally. It relies on two types of cues: binocular and monocular. Binocular cues depend on the combination of images from both eyes and how the eyes work together. Since the eyes are in slightly different positions, each eye captures a slightly different image. This disparity between images, known as binocular disparity, helps the brain interpret depth. When the brain compares these images, it determines the distance to an object.

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Related Experiment Video

Updated: Jun 17, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings

Published on: August 1, 2018

Cooperative and competitive interactions facilitate stereo computations in macaque primary visual cortex.

Jason M Samonds1, Brian R Potetz, Tai Sing Lee

  • 1Center for the Neural Basis of Cognition and Computer Science Department, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA. samondjm@cnbc.cmu.edu

The Journal of Neuroscience : the Official Journal of the Society for Neuroscience
|December 18, 2009
PubMed
Summary

Neural interactions in the brain

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Related Experiment Videos

Last Updated: Jun 17, 2026

Investigating Object Representations in the Macaque Dorsal Visual Stream Using Single-unit Recordings
07:08

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Published on: August 1, 2018

Monocular Visual Deprivation and Ocular Dominance Plasticity Measurement in the Mouse Primary Visual Cortex
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Published on: February 8, 2020

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Area of Science:

  • Neuroscience
  • Computational Neuroscience
  • Vision Science

Background:

  • The brain infers depth using binocular disparities, a process complicated by the stereo correspondence problem.
  • Lateral interactions among neurons are hypothesized to resolve disparity uncertainty by incorporating contextual information.

Purpose of the Study:

  • To investigate how correlated neuronal activity in the primary visual cortex relates to disparity tuning and visual stimuli.
  • To determine if local and distant neuronal interactions contribute to improved depth perception.

Main Methods:

  • Recorded correlated activity among pairs of neurons in the primary visual cortex.
  • Analyzed how disparity tuning and stimuli within receptive fields influenced spike correlations.
  • Examined response dynamics of nearby and distant neuronal pairs with varying disparity preferences.

Main Results:

  • Spike correlation decreased between nearby neurons with competing disparity tuning.
  • Spike correlation increased between distant neurons with similar disparity tuning.
  • Observed interactions improved individual neuron disparity tuning over time.

Conclusions:

  • Local competitive and distant cooperative interactions enhance disparity tuning in the visual cortex.
  • These neural interactions may form the basis for cooperative stereo algorithms used in depth perception.